subsoil

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subsoil

the soil below the plough layer, which is relatively infertile.
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Subsoiling was performed at the depth of 0.35 m, using a hydraulic decompressor (IKEDA--Model DPT), with three rods and working width of 1.60 m, mounted with a leveling roll, attached to its rear end.
The isolated effect of subsoiling on rice yield was not significant.
Keywords: Dry-land wheat; Fallow period; Subsoiling; N application; Grain yield; Soil-water balance
Many studies have demonstrated that soil water storage (SWS) was significantly related to tillage practices such as no tillage (NT) and subsoiling (SS) (Jin et al.
Other studies showed that NT coupled with subsoiling practice can increase crop yields and WUE in semi-arid areas of northern China.
We hypothesised that a new tillage interval program with NT and subsoiling could improve soil water storage, increase crop yield, and enhance WUE by loosening the soil, thereby increasing rain infiltration.
Reeves DW, Mullins GL (1995) Subsoiling and potassium placement effects on water relations and yield of cotton.
Sojka RE, Busscher WJ, Gooden DT, Morrison WH (1990) Subsoiling for sunflower production in the southeast Coastal Plains.
By employing conservation tillage (no surface tillage with in-row subsoiling), which enabled adequate root growth into the subsoil, Hunt et al.
Many farmers in the Coastal Plain have been using no surface tillage with wide in-row subsoiling for a number of years.
With subsoiling, the tool penetrates the soil's blocky structure, creating areas of loose soil and large pores without disturbing crop residue on the soil surface.
Most importantly, since subsoiling doesn't destroy crop residues on the surface and probably is not required every year, the practice is compatible with conservation tillage.